Mesin preheating induksi umume digunakake sadurunge kahanan hardening utawa welding. Kanggo preheating proses quenching, bagean sing nindakake proses quenching induksi sawise perawatan preheat, bisa ngatasi masalah deformasi bagean digawe panas sajrone proses layanan.

  Kajaba iku, bisa nyuda distorsi workpiece sajrone proses hardening, nambah distribusi lapisan hardening, nambah kekandelan lapisan hardening, entuk struktur metallografi sing cocog ing workpiece lan stres compressive residual, lan ngilangi retakan quenching. Preheating kanggo proses welding bisa alon mudhun tingkat cooling saka kisaran suhu cooling las tombol, nyegah over-hardening, lan nyuda ductility saka weld lan zona panas-kena pengaruh. Bisa nyuda kaku shrinkage las lan logam basa jejer, utamané kanggo joints welding-kaku dhuwur.